My “full day” of reasonably strenuous outdoor work has somehow become about three-hours.
I wish you had favored us with some pics. I sometimes use the 429215, but years ago modified the mold to do away with the gas check so that the finished bullet weighs 200 grains. I wanted a 200 gr bullet, mostly for indoor shooting, and to save a little lead.
I normally use 8 grs of W231. It is one of those bullets that shoots better than it looks, IMHO. I have experimented with seating it over the driving band and cutting back on the powder charge a bit but have given up on that and gone back to normal seating and crimping.
What stocks are you using on your Model 69?